modified naming scheme. main collection/repo name changed from google-gc...

Changed repo name from google-gcloud to google-cloud. elements changed from gcloud-* to google-cloud-*.
(idea suggested by ericbidelman)
I'm happy to share my client id for a live demo, if there's a way to keep it private. Alternatively, the demo site could give a user the option to enter their client to run it on their client. I guess we could also create a special project for this demo, give it a low quota and take our chances that people don't do evil things with it. GCE is a bit diff from other services because it gives you the ability to create a fully functioning server and do anything you want with it (e.g. bitcoin mining :).